Qmail - TCPServer
When using Qmail using tcpserver to spawn the qmail-smtp process, add a rule to your
/etc/tcp.smtp file directing it to accept connections based on the reverse DNS of the connecting host:
Qmail - Inetd
When using Qmail as an inetd service by using tcp-env, all SMTP access configuration is done from the following files:
- Add the following line to /etc/hosts.allow
tcp-env: .antispamcloud.com: setenv = RELAYCLIENT
- Add the following line to /etc/hosts.deny . This will deny access from all hosts except those in /etc/hosts.allow for the inetd service qmail
Replace .antispamcloud.com with your servers root hostname.
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